Mile High Pong`, a large-scale game of Pong played with hundreds of people, was built using Twilio's API. The project was first tested at a local coffee shop with 9 players and later scaled up to be projected on the side of a building with over 800 players. Despite initial concerns about smooth operation, everything ran smoothly. For new Twilio developers, it is suggested that they should focus on best practices and resources available through Twilio's community hub to improve their skills and build engaging experiences.